Self-inking hand-stamp.



H. s. FOLGER & 0. L. REDP'IELD.

SELF INKING HAND STAMP.

APPLICATION FILED APR.4, 1914.

zfizf eggesx HARRY s. rowan AND CASPER n nnnnnnn; or cn'xcneofintmois;SAID annrrnnn ASSIGNOR TO SAIDIFOLGER.

1 sELr-INKiNe HAND-STAMP.

I To all whom 'it' may concern:

Be it known that we, HARRY S. FOLGER and CASPER L. REDFIELD, citizens ofthe United States of America, and residents of Chicago, county of Cook,and State of Illinois, have invented certain new and usefulImprovemerits in Self-Inking Hand-Stamps, of which the following is aspecification.

Our invention relates to self inking hand-, stamps and has for itsobject improvements in such stamps. s

In the accompanying drawings Figure 1 is aside elevation; Fig. ,2 is afront elevaf tion; Fig. 3 is a central section corresponding to F1g. 2;and Fig. 4 is an enlarged sec amen-Jimm e)? Fig. 3; j

bands 10 are ifi dr in th pe. supported in 'a' frame 11 provided with ahandle 12. The-bands 10 are supported on band wheels 13 mounted upon aband shaft 14. At the-lower part ofthe frame 11 the type band's run overa bridge 15.

The parts so far described represent the ordinary hand dating stamp wellknown in the trade and require no further description.

Through the lower part of the frame 11, and just above the bridge 15, isa shaft 16 parallel to the shaft 14. The outer ends of shafts 14 and 16are connected to links 17 and are guidedin slots 18 in the side frames19. Tie rods 20 secure the side frames 19 togetherbelow, while the partsassociatedwith the shaft 16'hold the upper par'tsbf the frames 19 sothat said frames willremain parallel and permit the stamp frame 1 1to'rise and fall in the frames 19.

Pivoted on screws 21 in side frames 19 is a swinging frame 22 in whichis supported 'fiadflholding box 23. This box contains the pad 24.Thepivot 21 is so located that when the-band frame 11 is at its highestosition and the swinging frame 22 is moved orward under the bands 10,the face of the pad 24 will be in contact with the type on the bandswhich are directly beneath the bridge 15.

Secured to the shaft 16 by pins 25 are arms 26 which have their freeends pivoted at 27 to the side arms of the swinging frame 22. Theseparts are soarranged that when.

the hand holding frame'll is. moved down:

wardin-the side frames 19, the pad holding frame 22 will be moved fromthe osition shown in full lines in Fig. 4 tothat s own in dotted lines.In this moving, the pad will initially move downward more rapidly thanthe type, and then will move laterally out of the way so that thetypemay move past the pad to the printingpoint.

- On the shaft 16 is aspring 28 having one endseeuredto the shaft andthe other end secured tothe band frame 11. As the arms 26 are rigidlysecured to the shaft 16 by the pins 25, and asthe free ends of thesearms swing rearwardly and upwardly in the are of a circle aboutthe'pivot 21when the shaft 16 descends in the slot 18, it will beevident that such action turns the shaft 16in its bearings and winds thespring 28. The wind of the spring 28 on the shaft 16, and its initialtension, are so arranged that the action of the spring is to elevate thebandholding frame 11'. This elevation finds its limit by contact,betweenthe pad 24 and the type 10, the connections being such that the pad ismoving upward more rapidly than the type at the instant of contact.

' In using the stamp, the side frames'19 are stationary and the typecarrying parts move downward in these frames. In making such movement.the hand of the operator. is brought toward the tops of the frames 19Which are on opposite sides of the handle 12. To. avoid having the handstrike these frames and at the same time to keep the handle short sothat the entire stamp will not occpuy too much space, the side frames donot extend far enough upward to inclose the shaft 14 in the slots-18when the stamp is in normal position. This leaves the slots 18 open attheir upper ends. To properly guide the stamp body in the side frames atthe beginning of the downward movement of the body, guide blocks 29-aresecured to the inside of the links, 17 and operate the slots 18. Theseblocks 29 may extend the entire length of the links 17 and serve as theonly guides for the stamp body in the frames 19. We have, however, shownthem simply as short blocks located between the shafts 14,and 16, thesaid shafts themselves serving. as. the ends of the guides in theslots-18. f

It will'be observed that the stamp frame composed of the plates 19 isnot symmetrical with regard to the center line of the slots 18, butextends farther to the rear than to the front of the center line of thestamp. The objeot'in shortening the forward extension vof the frames 19to something less than would be normally used for a substantial base isto bring the front tie rod 20 near to the type when inprinting;position;v so that said rod will serve as a visual guide-inplacing the stamp accurately at the place where it is desired that theprinting shall be.

I Thereacwardextension is made somewhat tioni whieh states that as theshaft 16 (and lid consequently the stamp body) moves downward in theside fragrnes 19 'the pivots?? move ingthe arcpf a circle aboutpivots21, it will be seen vtbe inspectionof-Fign 4: thnt the shaft 16notonly moves below pivots Qflbnt also belowmovingpivots 27. .The efiectofthisis to bringthe rearward movement of the pad 24lto a stop while thetype are 'moving' downward and to also giveit. a very slight forward.movement justv as the type are reabhingthe printing point. The generalresultvof this isto'. reduce the total movementvof the pad to a minimumand thereby save space in the stamp and power required tomove thestampbody and pad in mpr nting. a

ln oneof the links '1? is anotch 30, and securedto the adjacent frame 19is a dog 31, adapted to engage said notch when the stamp is nearestitslowestposition and hold it in thatposition, against the elevatingaction of the spring 28. 'The,notch.30 and dog 31 are sorelated thatwhen in. engagement with eachpther the pad Qiis at or near its mostrearward position. The pad box23 is held in the swinging frame22byfriction and Inay bepushedout of the frame 22 by the application ,of'amoderate force manually applied. 13y the chain of connections involvingthe vertical descent of the stamp body and themovement of the .pad toits mostyearward position at a time when the stamp body is near butsomewhat above, its

lowest position, tl1e, not ch 30 and dog 31.

serve to .holdthe. swinging frame22 in that position in,,whichit isniosteasy to remove the pad box for inking the pad. Therearward extensienofthe frame 1% which places the rear .tie rod 20 farther from the centerof the stamp movement than is the front tie rodgnzes ,convenient spacefor the downward ncrement of the, pad bonto release it ,rfrom theswinging frame. This held position of theiswingingframe and. pad box issomewhat to the rear of the dotted position shown. in F1.4=,,.,which.dotted osition is thatpccnp e when the stamp body lowestposition,

accidents as falling upon the floor. *thatthe elevating spring 28 isconcealed beis. at its it will be observed that the connections "forself inking are located between--the stamp .framezll and the side frames19, and consequently are protected from in ury, even when'the stamp issubjected to inch hind the bands 10 and gives no exterior evidence ofits existence. Placing the elevating spring at this place betweentheband wheels 13 and the bridge 15 avoids the necessity-for a longhandle to receive such spring asis the case with ordinaryself inkingstamps it is to be observed thatXthe two side frames 19 are flat platesexactly. alike, and are connectedtogether by tie rods. "-By'simplychanging the length of. these vtie. rods and the ad holding devices, thesame frames and operating devices are. adapted to accommodate stamps ofany width.

The term dating stamps asusedin the claims hereinafter refers to; a coplete device, which is not ,self inking bu .whichis adapted for ordinaryhand usage without any of the attachmentswhich adapt itto self inkinoperations. It is the complete commerciifiarticle to which self inkingattachments are applied.

Dating stamps are usually ,band stamps, and that form ofdater ishereillustrated. Band stamps are :'sometimes' numbering stamps by reasonof changes in thecharacters on the bands, but :dating stamps as hereused is intended to, include band stamps of the character illustrated inthe drawings.

lil hat weclaim is: 1. A frame consisting of two sheetmetal platesconnected together by tie rods, a hand stamp located betweenthe frameplates, pro- Mid jections on the stamp projectingv through an ink padpivote to the outer frame, links pivoted to the stamp and connected tothe pad, andv a stamp elevated spring mounted upon the pivotal supportsfor the links.

3. A frame consisting of two sheet metal side plates connected togetherby tie rods, a stamp located between the plates andguided by the outerfaces of said plates, a pivoted to the side plates, and apa-inoving linkconnected. tothe stamp between the stam%body and the outer idestherefor.

4e. the combination wit the frame, the i lll lid

type bands and the band wheels of a dating stamp, of an outer frameconsisting of two frame in which thestamp is vertically guided, of anink pad pivoted to the outer frame, a shaft extending through bothframes and the space inclosed by the .type

- bands, an elevating spring on said shaft within said space, and linksconnecting the ink pad to the parts of the shaft between the inner andouter frames.

6. The combination with a band stamp, of a frame within which the stampis guided, a shaft extending through the stamp and frame, an elevatingspring located on said shaft and within the stamp, an inking pad, andconnections from the pad to those parts of the shaft between the stampand the frame.

7 The combination with a dating stamp of a frame having guiding slotstherein, links connected to the stamp and provided with guide blocksoperating in said guiding slots, and a dog secured to the side of theframe and adapted to engage a notch in one of said links to hold the'stamp at a fixed place in the frame.

8. The combination with a dating stamp, of a frame consisting ofseparate plates located on opposite sides of the stamp and connectedtogether by tie rods,

links connected to the stamp and-located outside of the plates formingthe frame, means ,by which the stamp may be reciprocatedin the frame,and a dog secured to the outside of one of said plates and adapted toengage a notch in the adjacent link to hold the stamp at a fixed placein the frame. I

9. A stamp body, a stampf'ramie within which the body reciprocates, a;swinging" frame pivoted to the stamp frame, an 1 pad supported in theswinging frame, a shaft extending through the stamp body, links rigidlysecured to the shaft and pivotally connected to the swingin frame, and aspring located upon said sha t and acting to turn the same so as tobring the pad against the stamp body.

'10. A 1 stamp frame; a stamp body arranged to reciprocate in the stampframe, a swinging frame pivoted to the stamp frame, a removable ink padsupported in the swinging frame, a shaft extending through the stampbody, links rigidly secured to opposite ends of the shaft and pivotallyconnected to the swinging frame, a-

spring on said shaft and acting to hold the pad against the stamp body,and locking devicesfor'holding the swinging frame with the pad away fromthe stamp body and 1n a position convenient for the removal of the P d-Signed at Chicago, Illmo1s th1s 31st day of March 1914.

HARRY s. FOLGER. v CASPER L. REDFIELD. Witnesses: WALTER H. Rnnrmm,James C. Rnnrmnn.

